High-strength wind-resistant skid-resistant waterproof underlayment

ABSTRACT

The present invention relates to the technical field of waterproof materials, and particularly to a high-strength wind-resistant skid-resistant waterproof underlayment. The high-strength wind-resistant skid-resistant waterproof underlayment comprises a first non-woven fabric layer, a first film layer, a first asphalt layer, a gridding cloth layer, a second asphalt layer, a second non-woven fabric layer, a second film layer and a third non-woven fabric layer laminated successively; the first film layer and the second film layer are waterproof elastic films respectively. The object of the present invention is to provide a high-strength wind-resistant skid-resistant waterproof underlayment. The waterproof underlayment formed by structures such as a first film layer and a second film layer and the like can be fixed through nails on a roof made of a wood structure, etc., and the construction is quick, convenient, and labor-saving, and the waterproofness is good.

TECHNICAL FIELD

The present invention relates to the technical field of waterproofmaterials, and particularly to a high-strength wind-resistantskid-resistant waterproof underlayment.

BACKGROUND ART

A waterproof underlayment, playing an important role in a tile surface,is a structural layer provided under the tile, and serves waterproof andmoisture-proof functions, because the “tile” itself cannot be consideredas a waterproof material, and only after the tile and a waterproofunderlayment are combined, can a waterproof barrier be formed.

The construction of conventional waterproof underlayment requires a lotof labors due to its complexity; for example, in the buildings from Mingand Qing Dynasties, a waterproof underlayment is composed of a roofboarding made of graphite containing impurities, roofing formed of somematerial, roofing made of graphite containing impurities, paint formedby processing China wood oil and so on, reaching an overall thickness ofup to 15 cm, and being capable of preventing penetration for hundredyears.

For existing waterproof underlayment, a cold pasting construction methodis usually used to paste a waterproof coiled material on awood-structure roofing formed by cement tile, colored clay tile andasphalt tile, etc. Such construction is quick, convenient, andlabor-saving. However, the cold pasting construction method onlyprovides a limited adhesion force, and the waterproof underlayment willlikely become loose, leading to water penetration.

Therefore, to overcome the above-mentioned problems, it is urgent toprovide a novel high-strength wind-resistant skid-resistant waterproofunderlayment.

DISCLOSURE OF THE INVENTION

The object of the present invention is to provide a high-strengthwind-resistant skid-resistant waterproof underlayment. The waterproofunderlayment is formed by structures such as a first film layer and asecond film layer, and can be fixed through nails on roofing made of awood structure and the like, and the construction is quick, convenient,and labor-saving, and the waterproofness is good.

The present invention provides a high-strength, wind-resistant,skid-resistant and waterproof underlayment, wherein the waterproofunderlayment comprises successively: a first non-woven fabric layer, afirst film layer, a first asphalt layer, a gridding cloth layer, asecond asphalt layer, a second non-woven fabric layer, a second filmlayer and a third non-woven fabric layer;

the first non-woven fabric layer, the first film layer, the firstasphalt layer, the gridding cloth layer, the second asphalt layer, thesecond non-woven fabric layer, the second film layer and the thirdnon-woven fabric layer are laminated as one piece; and

the first film layer and the second film layer are waterproof elasticfilm layers respectively.

Further, the waterproof elastic film layers are polyethylene films orpolypropylene films.

Further, the first film layer is a polyethylene film, and the secondfilm layer is a polypropylene film.

Further, a surface of the first non-woven fabric layer is provided withfirst protruding lines.

Further, a surface of the second non-woven fabric layer is provided withsecond protruding lines.

Further, a surface of the third non-woven fabric layer is provided withthird protruding lines.

Further, all of the first protruding lines, the second protruding linesand the third protruding lines present a grid form.

Further, the first non-woven fabric layer, the second non-woven fabriclayer and the third non-woven fabric layer respectively have a thicknessof 0.04-0.06 mm.

Further, the waterproof elastic film layer has a thickness of 0.06-0.08mm; the first asphalt layer and the second asphalt layer respectivelyhave a thickness of 0.12-0.16 mm.

Further, the first non-woven fabric layer, the first film layer, thefirst asphalt layer, the gridding cloth layer, the second asphalt layer,the second non-woven fabric layer, the second film layer and the thirdnon-woven fabric layer have a total thickness of 0.5-1.0 mm.

The high-strength wind-resistant skid-resistant waterproof underlaymentprovided in the present invention uses strong durable gridding clothlayer as a felt, providing about 80% of strength of the waterproofunderlayment, effectively preventing the waterproof underlayment fromdeformation due to collision and extrusion by external forces, andimproving the impact resistance of the waterproof underlayment; thegridding cloth layer is provided with the first asphalt layer and thesecond asphalt layer respectively on both surfaces, improving thewaterproof performance of both surfaces of the gridding cloth layer, anddoubly ensuring the waterproof performance of the waterproofunderlayment; the non-woven fabric (preferably polyester fiber non-wovenfabric) has features of moisture resistance, air permeability,flexibility, light weight, non-combustion-supporting property, highdecomposability, non-toxic and non-irritating property, low price,recyclability and reusability, etc., and the process therefor has ashort process flow, a quick manufacturing speed, a high yield, low costand a lot of material sources, which can reduce the cost and the weightof the waterproof underlayment; the non-woven fabric has an excellentskid resistance, a strong resistance to UV, and a strong resistance toageing, thus, the first non-woven fabric layer on the one hand increasesthe friction coefficient of the surfaces of the waterproof underlayment,and improves its skid resistance, so that constructors will not likelyslip during construction, thereby improving the construction safety atconstruction sites, such as roofs, especially on sloped roofs, and onthe other hand improves the UV resistance and ageing resistance of thewaterproof underlayment, thereby improving the ageing resistance of thewaterproof underlayment; the third non-woven fabric layer, with itsexcellent skid resistance, can be better laid on roofs made of woodstructures, etc., helping constructors in construction; the first filmlayer and the second film layer are used so that when an external objectsuch as a nail pierces through the waterproof underlayment, the firstfilm layer and the second film layer respectively wrap where is piercedby the external object in an effective way, preventing the waterproofunderlayment from water penetration due to piercing by the externalobject; with the double protection of the first film layer and thesecond film layer, the waterproof underlayment can be fixed on roofsmade of wood structures, etc. with nails and the like, and theconstruction is quick, convenient and firm, without influencing itswaterproof performance.

BRIEF DESCRIPTION OF DRAWINGS

In order to more clearly illustrate technical solutions in embodimentsof the present invention or in the prior art, FIGURES which are neededfor description of the embodiments or the prior art will be introducedbriefly below. Apparently, the FIGURES in the following description showsome embodiments of the present invention, and a person ordinarilyskilled in the art still can obtain other relevant FIGURES according tothese FIGURES, without paying inventive efforts.

FIG. 1 is a structural schematic diagram of a high-strengthwind-resistant skid-resistant waterproof underlayment provided in anexample of the present invention.

REFERENCE SIGNS

-   -   1-first non-woven fabric layer; 2-first film layer; 3-first        asphalt layer; 4-gridding cloth layer; 5-second asphalt layer;        6-second non-woven fabric layer; 7-second film layer; 8-third        non-woven fabric layer.

DETAILED DESCRIPTION OF EMBODIMENTS

Below, the technical solutions of the present invention will bedescribed clearly and completely in conjunction with the FIGURES.Apparently, some but not all of examples of the present invention aredescribed. Based on the examples of the present invention, all the otherexamples, which can be obtained by a person skilled in the art withoutpaying inventive efforts, fall within the scope of protection of thepresent invention.

In the description of the present invention, it should be noted thatorientational or positional relationships indicated by terms such as“center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”,“inner”, and “outer” are based on orientational or positionalrelationships as shown in the FIGURE, merely for facilitating describingthe present invention and simplifying the description, rather thanindicating or suggesting that related devices or elements have to be inthe specific orientation or configured and operated in specificorientation, therefore, they should not be construed as limiting thepresent invention. Besides, terms “first”, “second”, “third” and so onare merely for descriptive purpose, but should not be understood asindicating or suggesting to have importance in relativity.

In the description of the present invention, it should be indicated thatunless otherwise expressly specified and defined, terms “installation”,“link” and “connection” should be understood widely. For example, it maybe a fixed connection, a detachable connection, or an integratedconnection; it may be a mechanical connection, or an electricalconnection; it may be a direct connection, or an indirect connectionthrough an intermediate medium; and it also may be an innercommunication between two elements. For a person ordinarily skilled inthe art, the specific meanings of the above-mentioned terms in thepresent invention can be understood according specific circumstances.

EXAMPLES

Referring to FIG. 1, the present example provides a high-strengthwind-resistant skid-resistant waterproof underlayment. The FIGURE is astructural schematic diagram of the high-strength wind-resistantskid-resistant and waterproof underlayment provided in the example ofthe present invention, wherein section lines shown in the FIGURE do notintend to show section lines, but for the purpose of more clearlyshowing a first non-woven fabric layer, a first film layer, a firstasphalt layer, a gridding cloth layer, a second asphalt layer, a secondnon-woven fabric layer, a second film layer and a third non-woven fabriclayer.

Referring to FIG. 1, the high-strength wind-resistant skid-resistantwaterproof underlayment provided in the present example comprisessuccessively: a first non-woven fabric layer 1, a first film layer 2, afirst asphalt layer 3, a gridding cloth layer 4, a second asphalt layer5, a second non-woven fabric layer 6, a second film layer 7 and a thirdnon-woven fabric layer 8. That is to say, both outer surfaces of thewaterproof underlayment are non-woven fabric layers, i.e., the firstnon-woven fabric layer 1 and the third non-woven fabric layer 8.

The first non-woven fabric layer 1, the first film layer 2, the firstasphalt layer 3, the gridding cloth layer 4, the second asphalt layer 5,the second non-woven fabric layer 6, the second film layer 7 and thethird non-woven fabric layer 8 are laminated as one piece.

The first film layer 2 and the second film layer 7 are waterproofelastic film layers respectively.

In the present example, the strong durable gridding cloth layer 4 isused as a felt, providing about 80% of strength of the waterproofunderlayment, effectively preventing the waterproof underlayment fromdeformation due to collision and extrusion by external forces, andimproving the impact resistance of the waterproof underlayment; thegridding cloth layer 4 is provided with the first asphalt layer 3 andthe second asphalt layer 5 respectively on both surfaces, improving thewaterproof performance of both surfaces of the gridding cloth layer 4,and doubly ensuring the waterproof performance of the waterproofunderlayment; the non-woven fabric has features of moisture resistance,air permeability, flexibility, light weight, non-combustion-supportingproperty, high decomposability, non-toxic and non-irritating property,low price, recyclability and reusability, etc., and the process thereforhas a short process flow, a quick manufacturing speed, a high yield, lowcost and a lot of material sources, which can reduce the cost and theweight of the waterproof underlayment; the non-woven fabric has anexcellent skid resistance, a strong resistance to UV, and a strongresistance to ageing, thus, the first non-woven fabric layer 1 on theone hand increases the friction coefficient of the surfaces of thewaterproof underlayment, and improves its skid resistance, so thatconstructors will not likely slip during construction, thereby improvingthe construction safety at construction sites such as roofs, especiallyon sloped roofs, and on the other hand improves the UV resistance andageing resistance of the waterproof underlayment, thereby improving theageing resistance of the waterproof underlayment; the third non-wovenfabric layer 8, with its excellent skid resistance, can be better laidon roofs made of wood structures, etc., helping constructors inconstruction; the first film layer 2 and the second film layer 7 areused so that, when an external object such as a nail pierces through thewaterproof underlayment, the first film layer 2 and the second filmlayer 7 respectively wrap where is pierced by the external object in aneffective way, preventing the waterproof underlayment from waterpenetration due to piercing by the external object; with the doubleprotection of the first film layer 2 and the second film layer 7, thewaterproof underlayment can be fixed on roofs made of wood structures,etc. with nails and the like, and the construction is quick, convenientand firm, without influencing its waterproof performance.

Specifically, the first non-woven fabric layer 1, the first film layer2, the first asphalt layer 3, the gridding cloth layer 4, the secondasphalt layer 5, the second non-woven fabric layer 6, the second filmlayer 7 and the third non-woven fabric layer 8 are molded through hotpressing; that is, the first non-woven fabric layer 1, the first filmlayer 2, the first asphalt layer 3, the gridding cloth layer 4, thesecond asphalt layer 5, the second non-woven fabric layer 6, the secondfilm layer 7 and the third non-woven fabric layer 8 are hot-pressed intoone piece, forming the waterproof underlayment.

The waterproof elastic film layers in the present example use anexisting material, is waterproof, and can form, due to its elasticity,effective wrapping for the position pierced through by an externalobject when the external object, such as a nail, etc. pierces throughthe waterproof underlayment, preventing the waterproof underlayment fromwater penetration due to piercing by the external object; preferably,the waterproof elastic film layers are polyethylene films orpolypropylene films, so as to prevent the waterproof underlayment fromwater penetration when pierced, prolonging the service life, reducingthe maintenance cost, and ensuring the overall waterproof performance ofthe waterproof underlayment.

The first film layer 2 and the second film layer 7 can be made of a samefilm layer or different film layers; preferably, the first film layer 2is a polyethylene film, and the second film layer 7 is a polypropylenefilm; alternatively, the first film layer 2 is a polypropylene film, andthe second film layer 7 is a polyethylene film.

In an optional solution of the present example, a surface of the firstnon-woven fabric layer 1 is provided with first protruding lines (notshown in the FIGURE). The first protruding lines protrude from the firstnon-woven fabric layer 1, so as to increase the surface area per unitarea of the first non-woven fabric layer 1, increasing the contact areaof the first non-woven fabric layer 1. Meanwhile, the first protrudinglines increase the friction coefficient of the first non-woven fabriclayer 1, which, on the one hand, increases the friction coefficient ofthe surface of the waterproof underlayment and improves its skidresistance, so that constructors will not likely slip duringconstruction, thereby improving the construction safety at constructionsites such as roofs, particularly sloped roofs, and on the other hand,make the first film layer 2 more firmly connected onto the firstnon-woven fabric layer 1, preventing the waterproof underlayment fromcracks occurring due to external collision, effectively improving thestructural strength of the waterproof underlayment, and enhancing thewaterproof performance of the waterproof underlayment.

A surface of the second non-woven fabric layer 6 is provided with secondprotruding lines (not shown in the FIGURE). The second protruding linesprotrude from the second non-woven fabric layer 6, so as to increase thesurface area per unit area of the second non-woven fabric layer 6,increasing the contact area of the second non-woven fabric layer 6.Meanwhile, the second protruding lines increase the friction coefficientof the second non-woven fabric layer 6, so that the second asphalt layer5 and/or the second film layer 7 can be more firmly connected onto thesecond non-woven fabric layer 6, preventing the waterproof underlaymentfrom cracks occurring due to external collision, effectively improvingthe structural strength of the waterproof underlayment, and enhancingthe waterproof performance of the waterproof underlayment.

Specifically, the first protruding lines can be provided on one surfaceof the first non-woven fabric layer 1, or also can be provided on bothsurfaces of the first non-woven fabric layer 1; preferably, the surfaceof the first non-woven fabric layer 1 close to the first film layer 2 isprovided with the first protruding lines, so as to increase the contactarea and the friction coefficient between the first non-woven fabriclayer 1 and the first film layer 2; the other surface of the firstnon-woven fabric layer is relatively smooth, making it easy to laythereon tiles such as cement tiles, colored clay tiles and asphalt tilesand the like.

The second protruding lines can be provided on one surface of the secondnon-woven fabric layer 6, or also can be provided on both surfaces ofthe second non-woven fabric layer 6; preferably, both surfaces of thesecond non-woven fabric layer 6 are provided with the second protrudinglines, so as to increase the contact areas and the friction coefficientsbetween the second non-woven fabric layer 6 and the second asphalt layer5 and between the second non-woven fabric layer and the second filmlayer 7.

The third protruding lines can be provided on one surface of the thirdnon-woven fabric layer 8, or also can be provided on both surfaces ofthe third non-woven fabric layer 8; preferably, the surface of the thirdnon-woven fabric layer 8 close to the second film layer 7 is providedwith the third protruding lines, so as to increase the contact area andthe friction coefficient between the third non-woven fabric layer 8 andthe second film layer 7.

The first protruding lines, the second protruding lines and the thirdprotruding lines respectively can be provided on a part of the surfacesof the first non-woven fabric layer 1, the second non-woven fabric layer6 and the third non-woven fabric layer 8, or also can be provided on allof their surfaces; the specific distribution conditions of theprotruding lines on the surfaces of the non-woven fabric layers dependon factors such as thickness, waterproof performance, cost performanceof the waterproof underlayment.

The first protruding lines, the second protruding lines and the thirdprotruding lines can be arranged to be of irregular shapes or regularshapes, such as strip shapes or grid forms; the first protruding lines,the second protruding lines and the third protruding lines, can be of asame shape or different shapes; preferably, all of the first protrudinglines, the second protruding lines and the third protruding lines have agrid form, so as to improve the structural strength of the waterproofunderlayment, facilitating producing and processing of the waterproofunderlayment.

The first non-woven fabric layer 1, the second non-woven fabric layer 6and the third non-woven fabric layer 8 in the present examplerespectively have a thickness of 0.04-0.06 mm.

The waterproof elastic film layer in the present example has thicknessof 0.06-0.08 mm, that is, the first film layer and the second film layerrespectively have a thickness of 0.06-0.08 mm.

The first asphalt layer 3 and the second asphalt layer 5 in the presentexample respectively have a thickness of 0.12-0.16 mm.

In another optional solution of the present example, the first non-wovenfabric layer 1, the first film layer 2, the first asphalt layer 3, thegridding cloth layer 4, the second asphalt layer 5, the second non-wovenfabric layer 6, the second film layer 7 and the third non-woven fabriclayer 8 have a total thickness of 0.5-1.0 mm; using the waterproofunderlayment of this thickness not only ensures that the waterproofunderlayment has a certain weight, which prevents the waterproofunderlayment from being blown away by wind when it is to be laid andresults in difficulty in construction, but also ensures that thewaterproof underlayment is so light that it can be carried by oneperson, reducing the labor cost for carrying during the construction.

Finally, it should be indicated that the above-mentioned examples aremerely used to illustrate technical solutions of the present invention,rather than limiting the present invention. While detailed descriptionis made to the present invention with reference to the above-mentionedexamples, those ordinarily skilled in the art should understand that thetechnical solutions of the above-mentioned examples can be modified, orequivalent substitutions can be made to some or all of the technicalfeatures thereof; and these modifications or substitutions will not makethe essence of the corresponding technical solutions depart from thescope of the technical solutions of the examples of the presentinvention.

1-10. (canceled)
 11. An article comprising: roofing underlaymentcomprising: a first non-woven fabric layer, a first film layer, a firstasphalt layer, a felt layer, a second asphalt layer, a second non-wovenfabric layer, a second film layer, and a third non-woven fabric layer;wherein: the first non-woven fabric layer, the first film layer, thefirst asphalt layer, the felt layer, the second asphalt layer, thesecond non-woven fabric layer, the second film layer and the thirdnon-woven fabric layer are laminated as one piece; the first film layerand the second film layer comprise elastic film layers, respectively;and the felt layer is disposed between the first and second asphaltlayers.
 12. The article of claim 11, wherein the elastic film layerscomprise a polyethylene film or a polypropylene film.
 13. The article ofclaim 12, wherein the first film layer comprises a polyethylene film,and the second film layer comprises a polypropylene film.
 14. Thearticle of claim 11, wherein a surface of the first non-woven fabriclayer comprises first protruding lines.
 15. The article of claim 14,wherein a surface of the second non-woven fabric layer comprises secondprotruding lines.
 16. The article of claim 15, wherein a surface of thethird non-woven fabric layer comprises third protruding lines.
 17. Thearticle of claim 16, wherein the first protruding lines, the secondprotruding lines and the third protruding lines comprise a grid form.18. The article of claim 16, wherein the first non-woven fabric layer,the second non-woven fabric layer and the third non-woven fabric layerrespectively comprise a thickness of approximately 0.04-0.06 mm.
 19. Thearticle of claim 18, wherein the elastic film layers comprise athickness of approximately 0.06-0.08 mm; and at least one of the firstor second asphalt layers comprises a thickness of approximately0.12-0.16 mm.
 20. The article of claim 16, wherein the first non-wovenfabric layer, the first film layer, the first asphalt layer, the secondasphalt layer, the felt layer, the second non-woven fabric layer, thesecond film layer and the third non-woven fabric layer collectivelycomprise a thickness of approximately 0.5-1.0 mm.
 21. The article ofclaim 12, wherein a surface of the first non-woven fabric layercomprises first protruding lines.
 22. The article of claim 13, wherein asurface of the first non-woven fabric layer comprises first protrudinglines.
 23. The article of claim 21, wherein a surface of the secondnon-woven fabric layer comprises second protruding lines.
 24. Thearticle of claim 22, wherein a surface of the second non-woven fabriclayer comprises second protruding lines.
 25. The article of claim 23,wherein a surface of the third non-woven fabric layer comprises thirdprotruding lines.
 26. The article of claim 24, wherein a surface of thethird non-woven fabric layer comprises third protruding lines.
 27. Thearticle of claim 11, wherein the felt layer comprises a fourth non-wovenfabric layer.
 28. A method of installing an underlayment on a roof, themethod comprising: affixing a bottom surface of the underlayment to aroof structure; laying one or more tiles on a top surface of theunderlayment; wherein the underlayment comprises: a first non-wovenfabric layer, a first film layer, a first asphalt layer, a felt layer, asecond asphalt layer, a second non-woven fabric layer, a second filmlayer and a third non-woven fabric layer; wherein: the first non-wovenfabric layer, the first film layer, the first asphalt layer, the feltlayer, the second asphalt layer, the second non-woven fabric layer, thesecond film layer and the third non-woven fabric layer are laminated asone piece; and the first film layer and the second film layer compriseelastic film layers, respectively.
 29. The method of claim 28, whereinthe felt layer is disposed between the first and second asphalt layers.30. The method of claim 28, wherein the felt layer comprises a fourthnon-woven fabric layer.